An image pickup apparatus includes an image sensor, and a controller configured to drive a focus unit so that a first position is focused, to acquire first information on a first refocusable range that is available in an image that is captured while the first position is being focused by the focus unit, to acquire second information on a second refocusable range that contains the first position, to acquire information on a second position on which the focus unit is to be focused so as to provide the second refocusable range using the first information and the second information, and make the image sensor capture an image while the second position is being focused by the focus unit.